/Engine/Source/Runtime/Slate/Public/Framework/Docking/TabManager.h
Gets the tab manager that a major tab owns. The returned tab manager is the tab manager that manages the minor tabs for a major tab. Note: this is not the same as DockTab->GetTabManager(). That function returns the tab manager the major tab is in
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FTabManager](API\Runtime\Slate\Framework\Docking\FTabManager) > GetTabManagerForMajorTab ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SDockTab](API\Runtime\Slate\Widgets\Docking\SDockTab) > DockTab ) const